Alert archive / Indiana / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 264, NWS Indianapolis, IN

July 11, 2011Randolph County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 11, 2011, 8:11 PM EDT for Randolph County, Indiana. It was in force for 14 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 11, 2011, 8:11 PM EDT (00:11 UTC)
Expired: Jul 11, 2011, 8:25 PM EDT
In force: 14 min
Issued by: NWS Indianapolis, IN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Randolph County, IN

The radar

The Cincinnati radar (KILN), 118 km from the middle of the area, began a volume at 00:13 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
Jul 11, 8:17 PM EDT	HAIL 1	4 Ese Winchester, IN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 11, 7:18 PM EDT	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.2 hours before the alert went out and 119 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 4907 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 987 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 202 m²/s²
0-3 km storm-relative helicity: 267 m²/s²
Significant tornado parameter: 5.9
Supercell composite: 33.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

680 
WUUS53 KIND 120011 RRA
SVRIND
INC135-120045-
/O.NEW.KIND.SV.W.0264.110712T0011Z-110712T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
811 PM EDT MON JUL 11 2011

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN RANDOLPH COUNTY IN EAST CENTRAL INDIANA...

* UNTIL 845 PM EDT

* AT 807 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES
  SOUTHEAST OF WINCHESTER...OR 21 MILES NORTH OF RICHMOND...AND
  MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF EASTERN
  RANDOLPH COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4000 8481 4009 8502 4023 8495 4020 8480
TIME...MOT...LOC 0011Z 285DEG 29KT 4012 8486
WIND...HAIL 60MPH 1.00IN

$$

SMF

1 follow-up statement

746 
WWUS53 KIND 120025
SVSIND

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
825 PM EDT MON JUL 11 2011

INC135-120035-
/O.CAN.KIND.SV.W.0264.000000T0000Z-110712T0045Z/
RANDOLPH-
825 PM EDT MON JUL 11 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN RANDOLPH COUNTY
IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 4000 8481 4009 8502 4023 8495 4020 8480
TIME...MOT...LOC 0025Z 285DEG 29KT 4009 8472

$$

SMF

The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 11, 8:09 PM EDT	Severe Thunderstorm Warning	IND	Carroll	21 min
Jul 11, 8:11 PM EDT	Severe Thunderstorm Warning	IND	Clinton, Howard, Tipton	34 min
Jul 11, 8:32 PM EDT	Severe Thunderstorm Warning	IND	Clinton, Tipton	43 min
Jul 11, 9:08 PM EDT	Severe Thunderstorm Warning	IND	Boone, Clinton, Hamilton, Tipton	52 min
Jul 11, 9:31 PM EDT	Severe Thunderstorm Warning	IND	Boone, Hamilton, Hancock, Hendricks, Madison, Marion	39 min
Jul 12, 3:30 AM EDT	Excessive Heat Warning	IND	Daviess, Knox, Lawrence, Martin	17 hr
Jul 12, 3:30 AM EDT	Heat Advisory	IND	Bartholomew, Brown, Clay, Decatur, Greene, Jackson and 6 more	17 hr
Jul 12, 6:25 PM EDT	Areal Flood Warning	IND	Knox	6 hr
Jul 12, 6:46 PM EDT	Areal Flood Warning	IND	Daviess	6 hr
Jul 12, 7:22 PM EDT	Special Weather Statement	IND	Martin	38 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2011 Every severe thunderstorm warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.